Wiper means for lasting machines



July 27, 1965 R. M. BOWLER WIPER MEANS FOR LASTING MACHINES 2 Sheets-Sheet 1 Filed Oct. 4, 1963 kw a Q.

Inventor RaymondMBou/Zer July 27, 1965 R. M. BOWLER WIPER MEANS FOR LASTING MACHINES 2 Sheets-Sheet 2- Filed Oct. 4, 1963 United States Patent 3,196,476 WIPER MEANS FOR LASTING MACHINES Raymond M. Bowler, Salem Depot, N,H., assignor to United Shoe Machinery Corporation, Boston, Mass., a

- corporation of New Jersey Filed Oct. 4, 1963, Ser. No. 313,965

6 Claims. (Cl. 1212.4)

shoe. Ideally, the wipers should conform generally to i the shape of the last around the entire forepart of-the shoe and be moved inwardly over the shoe bottom substantially at right angles to the edge of the insole.

Machines presently. available for this operation have the Wipers disposed for equal movements from positions equally spaced from the center line of the machine. The wipers themselves have been generally shaped to give optimum results when utilized with regularly shaped shoes,

that is, shoes not having either extremely square or pointed foreparts. When operating on shoes of the usual sizes and shapes such'wiper configuration and movement affords substantially adequate wiping along all points of the fore'part of the shoe. However, when shoes having square or pointed foreparts are lasted there is necessarily considerable compromise with the ideal wiper movement for the sake of effecting a minimally adequate wiper motion along the whole of the margin of the forepart. Wipers specifically adapted for operating on such shoes may be used to replace the more regularly shaped wipers but the motion of the wipers generally remains the same. Therehave been modifications to lasting machines to allow altering of the motion of one or both wipers to effect wiping coverage which would otherwise not be had. However, even where a particular motion, such as an extended wiping on one side, has been introduced, and a special configuration of Wiper has been used, the range of sizes and styles of shoes on which an adequate operation can be performed by a single pair of Wipers is extremely limited.

Particular problems existing in certain areas of lasting, mentioned by way of example, include the square toe of a work shoe, the relatively square toe and size of an infants shoe forepart, and the narrow forepart and pointed toe of some styles, particularly in womens shoes. Another area where difiiculties exist is in the lasting of welt shoes, where a particular movement of the wipers is desired so that the upper will be pressed uniformly against the insole rib. The problem of welt shoes, furthermore,

is not restricted to unusual shapes of shoes.

According to a feature of this invention, individual ad justing means are provided in a lasting machine for the operating mechanismsof each of its wiper carriers to impart a variable motion to each wiper so as to accommodate an infinite variety of forepart sizes and styles, and to afford wiping movement to the extent desired and at angles relative to the edge of the insole more nearly approximating the ideal than has heretofore been possible. i The above and other features of the invention, including novel details of construction and arrangement of parts, will now be more particularly described with reference to the accompanying drawings and pointed out in the claims.

In the drawings,

FIG. 1 is a plan view with parts broken away and partice ly in section of the Wiper means of a portion of a lasting machine embodying the present invention and show ing the wiper operating mechanism and adjusting mechanism.

FIG. 2 is a detail side elevation partly in section of the wiper means with some parts omitted for clarity; and

FIG. 3 is a section substantially along line IIIIII of FIG. 1.

The wiper means of the present invention may be embodied in a lasting machine of the type shown in an application for United States Letters Patent of Raymond M. Bowler et al., Serial No. 194,064, filed May 11, 1962, to which reference may be had for details relative to the construction and operation of a typical machine to which the invention may be applied. However, it should be understood that the invention is not limited in respect of its applicability to machines of that particular type and, instead, is equally applicable to lasting machines of other types adapted to operate on either the forepart or the.

heel end of shoes.

The improved wiper means illustrated in the drawings includes a pair of wipers 2 and 4 mounted in a pair of carriers 6 and 8, respectively, which are slidably received in a wiper head 10 between a frame member 12 and a cover plate 14. The carriers 6, 8 are provided with cam rolls 20, 22, 24 and 26 mounted on pins extending upward lyfrom the carriers 6, 8. The rolls are received-in cam slots 30, 32, 34 and 36 in the underside of the cover plate 14 to guide the carriers 6, 8 and wipers 2, 4 in their advancing and closing movements.

The carriers 6, 8 are connected, respectively, by links 40, 42 to levers 44, 46 which are pivotally disposed on fulcrums 48, 50 secured to the cover plate 14. The cover plate 14 is urged rearwardly (i.e. upwardly as viewed in FIG. 1) by two springs 52, 54 extending from opposite rear corners of the cover plate 14 to pins upstanding from the frame 12. A cross bar 56 fixed to the end of a rod 58, which extends forwardly from a mover (not shown) is adapted to engage an after face of the cover plate 14.

Fixedly attached to the frame 12 are guide members 60, 62 slidably retaining the cover plate 14. Brackets 64, 66 are secured to the guide members ,62, respectively, and pivotally support studs 65, 67 which rotatably and pivtally support shafts 68, 70. The forward ends of the shafts 68, 70 are provided with knurled knobs 72, 74.

The rearward ends of the shafts 68, 70 are threaded into lugs 76, 78 which mount pins 80, 82 slidably disposed in slots 84, 86 in the levers 44, 4:6. The pins 80, 82 each provided with a groove 79 receiving a pin 81 which prevents axial movement of the shaft in the cap 83,

A detailed description of the adjusting mechanism and its method of operation follows. For the sakeof simplicity reference will be made to the right side wiper 4, it being understood that the left side wiper and its associated mechanism operate in the same manner:

In preparing the wipers for operation, the operator adjusts the knobs 94 and 74 to position the wiper 4 in accordance with the size and contour of the shoe and the wiping motion to be applied to it.

Assuming for purposes of explanation that an extended wiper motion is desired of the right side wiper 4, the operator turns the knob 94 in a clockwise direction. The pin 82 is moved in the slot 86 toward the fulcrum termines the extent sition 1 pin 82. ,The length of the lever 46 ofthe pin {82 deof the wiping motion of the right.

forepart wiper 4. I

To orient the: wiper l-{properly relatively to. the. last,

3,11 aenroj 1 a fr I prising wipers',fwiper carriers retainingthe wipers, a reciprocating cover plate having means forguiding the the operator adjusts the knob 74.- Byrotatingtheknob. 74. in a counterclockwise direction'the operator 'causes the lug 78 to be moved rearwardly along theaxis of the shaft 70 on the threadslof the shaft 70. .Tlielug 78 carries vthepin'82 rearwardly with it, .causing'thelever" 46 to pivot about the fulcrum .50.. The pivotal motion prises an'ln'div dually ad ustable lever and linkage means attachedto the link 42, transmitting through the link a for v ward movement tothe wiper carrier 8,-zthereby' causing the cam rolls 24, 26't0 ride forwardly in the cam slots 34, 36. The forward movement of the cam rolls 24, 26

in the cam slots 34, 36causes a Commensurate change in the position of the Wiper 4, in this' instance "a closing mo tion. 'Thus','the knob '14 is usedto enter initial angular?" adjustments. 1' 1 p v p A Having adjusted both knobs 94"and74 for the'right side wiper 4, 'thesame'type of adjustments may be, en-

tered for the left side wiper 2I'with the "likeuse ofrthe knobs 92 and 72. A gauge comprised 'of referenceg:

marks may be incorporated in the levers 44,146tand 'in point which maybe selectively wiper carriers'in opening and closing directions, means for selectively and individually varying the extent of the closing motion of each i'wiper carrier, and means for =ually to accommodate various sizes and styles of, shoes.

2. Theinv'ention' according to claim- 1 in which the means for effectingthe extentof the closing motion comfor each wiper. V I

' '3. 'The; invention according :to claim2. in which: the

lever and linkagemeans-include. aflei /e'r having'a pivot positioned to vary the effective length of the lever. i ii 1 v '4. In a machine for lasting sh'oes, wiping means com prising wipersgwiperlcarriers retaining the wipers, v a reciprocatingfcover plate havingmeans forguiding the carriers in' opening. and closing directions; means open 'atedfby reciprocatibnof the cover plate formovingthe lfcarriers in said directions, means for selectively varying the framem er'nber 12' for use inconjunction with knobs .72,v 74, 92, 94 forquick and easysetting of' the adjust ments.

I By activation of a treadle (not shown), rod 58 is 36. fAs thecover plate 14 moves forward, thefulcrurn 50 is carried forward with it,the description again heing restricted to'right side operation. .The, pin 82-is now stationaryl and'acts asa fulcrum about which the "lever I 46 pivots; The leve -46, pivoting about fixed pin ,82 and,

the moving fulcrum 50,1-rnoves the .link 42' a'nd'therebyv also moves the wiper carrier'f8'andwiper 4 to an extent j the extent of the closing fm'otionof each wiper carrier 'includi'nga lever having'means. for varying its effective length, and meansfor'varyiiigfthe .initial position of the lever for selectively positioning each. wiper thereby to accommodatevarious sizes and styles of shoes;

5.. In a machine for lasting shoes,.wiping' means comprising a pair of wipers, a'pair'of wiperacarriers retaining the wipers and having cam rolls attached thereto, a reciprocating cover pla'te having cam slots for guiding the cam rolls in 'a closing} direction, a mechanism for movin'g each' wiper 'car'rier-in'flsaiddirection comprising a fulcrum fixed to the cover plate', a lever pivotally mounted upon the fulcrum, linkagemeansconnecting the lever to the wiper carrier,- a selectivelyadjustable pivot on the lever; means for: locating thefl pivot alongvthe lever to dependent upon the length of the lever to the left of the stationary pivot point, the pin 82. After completion of the wiping operation, therod .58 returns to its initial position and 'thesprin'gsf52, 5.4 urge the cover plate rearf wardly, returning the" fulcrum, point to its original po- If a different size of shoe is The 'above described ad ustments provide awiping means selectively adjustable to various "sizes and shapes of shoes and afford an improved angle of approach of V ftoreversethe settings 'of the n'ghtand left side knobs.

. l e bi d 4 m th w a k b 72, 74 are operated e qj h iti n f the j a fulcrum fixed to the cover plate, a lever pivotally m0untwipers 2, 4 {to suit the size of the shoe.: An extended.

with the wiper carrier, a pin slidably disposed in a slot 1 vary its eifective length, and;means for selectively locating the'pivot relative towthe path of reciprocation of the cover plate to vary the initial position of the lever.

'. '6. Inja machinerforlasting shoes, wiping means comprising, a pair of wipers, (a pair=of-wiper carriers: retaining the wipers and having cam rolls attached thereto, a recam rolls and hence also the wiper carr'iersin a closing direction, .a mechanism for each wiper carrier comprising ed on the fulcrum, alinkconnecting one end .of the lever in the other end of the lever, a threaded fs haft lengage Jgably rotatable in-the fulcrum and rotatable butretained the wipers relative to'the edge contour. of the insole."

Further, by the use of these adjustments,'thewiping off;

welt shoes is facilitated in that the extent of the wiping action and th'egorientation of the wipers is easily and accurately controlled. I I

f Having thus disclosed my. invention and described in f detail the preferred embodiment thereof, 1 claim as';new'- 1. Ina-,ma cfhine for las ingases, wiping madman; f JORDAN FRANKLIN, Primary Exgminer.

against axial' movement in the 7 pin, and a second mech anism .foreach wiper carrierv comprising; a' bracket, ;a

second threaded shaft pivotally' and rotatably supported by the bracket and rotatably engaging a lugtO-Which is attached the pin.. i

r ReferencesfCitetl by the Examiner 1 UNITED'STATES jPATENTS I 1 

1. IN A MACHINE FOR LASTING SHOES, WIPING MEANS COMPRISING WIPERS, WIPER CARRIERS RETAINING THE WIPERS, A RECIPROCATING COVER PLATE HAVING MEANS FOR GUIDING THE WIPER CARRIERS IN OPENING AND CLOSING DIRECTIONS, MEANS FOR SELECTIVELY AND INDIVIDUALLY VARYING THE EXTENT OF THE CLOSING MOTION OF EACH WIPER CARRIER, AND MEANS FOR 